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<?php
namespace Yoast\WP\SEO\Presenters\Twitter;
use Yoast\WP\SEO\Presentations\Indexable_Presentation;
use Yoast\WP\SEO\Presenters\Abstract_Indexable_Tag_Presenter;
/**
* Presenter class for the Twitter site tag.
*/
class Site_Presenter extends Abstract_Indexable_Tag_Presenter {
/**
* The tag key name.
*
* @var string
*/
protected $key = 'twitter:site';
/**
* Run the Twitter site through the `wpseo_twitter_site` filter.
*
* @return string The filtered Twitter site.
*/
public function get() {
/**
* Filter: 'wpseo_twitter_site' - Allow changing the Twitter site account as output in the Twitter card by Yoast SEO.
*
* @param string $twitter_site Twitter site account string.
* @param Indexable_Presentation $presentation The presentation of an indexable.
*/
$twitter_site = \apply_filters( 'wpseo_twitter_site', $this->presentation->twitter_site, $this->presentation );
$twitter_site = $this->get_twitter_id( $twitter_site );
if ( ! \is_string( $twitter_site ) || $twitter_site === '' ) {
return '';
}
return '@' . $twitter_site;
}
/**
* Checks if the given id is actually an id or a url and if url, distills the id from it.
*
* Solves issues with filters returning urls and theme's/other plugins also adding a user meta
* twitter field which expects url rather than an id (which is what we expect).
*
* @param string $id Twitter ID or url.
*
* @return string|bool Twitter ID or false if it failed to get a valid Twitter ID.
*/
private function get_twitter_id( $id ) {
if ( \preg_match( '`([A-Za-z0-9_]{1,25})$`', $id, $match ) ) {
return $match[1];
}
return false;
}
}